Results:
Eighty-two cases were recruited, 50 cases were males and 32 were
females. Their mean age was 57.2±15.23 years. Fifty cases (61%) were
negative for SARS‐CoV‐2 while 32 cases (39%) were positive.
The mean hospital stay in days were 14±4.14 days. Sixty-four cases
(78%) were recovered and discharged home while 18 cases (22%) died
within 2 weeks of follow up.
There was significant difference between Covid 19 and non Covid patients
regarding smoking (p=0.01) while there was no significant difference
between both groups regarding sex, diabetes, hypertension or cardiac
disease (table 1).
Regarding radiological examination, there was a high significant
difference between both groups in the context of lung congestion in X
ray with more congestion profile in Covid 19 patients (p=0.0004). In CT
chest, there was more consolidation and ground glass appearance among
Covid 19 patients (p<0.001) for each, while they had less
pleural effusion than Covid 19 negative patients (p=0.026).
Concerning lung ULS, there was more A profile among Covid 19
group and more abnormal A lines among them with statistically
significant difference between both groups (p<0.001) for both
items(table 2).
-Linear regression analysis for the independent predictors for being
Covid 19 positive was done (table 3). Smoking, congestion in x ray,A profile and abnormal A lines in lung ULS are
independent predictors for Covid 19 infection.
-A scoring system for prediction of Covid 19 diagnosis using clinical
and radiological data was calculated (table 4). Score cutoff value was
determined to = 5 with a sensitivity of 93.8% and a specificity of 58%
in detecting COVID19 positive patients (Figure 1)& (table 5).
By performing the correlation between clinical, laboratory and
radiological factors in Covid 19 positive patients on one side and
mortality and duration of hospital stay on the other side, we found the
following (table 6):
-There was significant positive correlation between mortality and each
of age, duration of fever, presence of cardiac disease including
hypertension, presence of B profile and abnormal A lines by lung ULS.
-There was significant negative correlation between mortality and each
of initial O2 saturation and EF by echocardiography.
-There was significant positive correlation between duration of hospital
stay and abnormal A lines.